1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * swsusp.c - SuperH hibernation support
4  *
5  * Copyright (C) 2009 Magnus Damm
6  */
7 
8 #include <linux/mm.h>
9 #include <linux/sched.h>
10 #include <linux/suspend.h>
11 #include <asm/suspend.h>
12 #include <asm/sections.h>
13 #include <asm/tlbflush.h>
14 #include <asm/page.h>
15 #include <asm/fpu.h>
16 
17 struct swsusp_arch_regs swsusp_arch_regs_cpu0;
18 
pfn_is_nosave(unsigned long pfn)19 int pfn_is_nosave(unsigned long pfn)
20 {
21 	unsigned long begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
22 	unsigned long end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
23 
24 	return (pfn >= begin_pfn) && (pfn < end_pfn);
25 }
26 
save_processor_state(void)27 void save_processor_state(void)
28 {
29 	init_fpu(current);
30 }
31 
restore_processor_state(void)32 void restore_processor_state(void)
33 {
34 	local_flush_tlb_all();
35 }
36